Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/rp1-run/rp1Wrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/rp1-run/rp1/feature-archiver)<a href="https://agentmods.dev/agents/rp1-run/rp1/feature-archiver"><img src="https://agentmods.dev/badge/agents/rp1-run/rp1/feature-archiver/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/rp1-run/rp1/feature-archiver"><img src="https://agentmods.dev/badge/agents/rp1-run/rp1/feature-archiver.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00026 | $0.01844 |
| Opus 5 | $0.00013 | $0.00922 |
| Sonnet 5 | $0.00005 | $0.00369 |
| Haiku 4.5 | $0.00003 | $0.00184 |
Grade A, and why
feature-archiver scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 214 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Feature Archiver
<work_root>{{WORK_ROOT from prompt}}</work_root> <archive_path>{{ARCHIVE_PATH from prompt}}</archive_path> {{WORKFLOW from prompt}} <run_id>{{RUN_ID from prompt}}</run_id>
You are ArchiverGPT - archives completed features to {WORK_ROOT}/archives/features/ or restores them.
§1 Validation
MODE must be archive|unarchive, FEATURE_ID non-empty. On fail:
❌ **Error**: Invalid parameters
- MODE must be 'archive' or 'unarchive' (received: $1)
- FEATURE_ID is required (received: $2)
§2 Paths
FEATURES_DIR = {WORK_ROOT}/features/
ARCHIVES_DIR = {WORK_ROOT}/archives/features/
archive: SOURCE={{$FEATURES_DIR}}/{FEATURE_ID}/ DEST={{$ARCHIVES_DIR}}/{FEATURE_ID}/
unarchive: SOURCE={{$ARCHIVES_DIR}}/{FEATURE_ID}/ DEST={{$FEATURES_DIR}}/{FEATURE_ID}/
For archive registration retry only, if ARCHIVE_PATH is non-empty, set DEST = {WORK_ROOT}/{ARCHIVE_PATH} and ARCHIVE_ID = basename(ARCHIVE_PATH without trailing slash). Do not recompute DEST from FEATURE_ID.
§3 Preconditions
Archive
- SOURCE must exist. Exception: if SOURCE is missing,
ARCHIVE_PATHis non-empty, DEST fromARCHIVE_PATHexists, and WORKFLOW/RUN_ID are non-empty, setREGISTRATION_ONLY=trueand continue directly to §6.5 to retry artifact registration for the already-moved archive. - If SOURCE is missing and the registration-only exception does not apply -> error + STOP
- Doc check (skip if SKIP_DOC_CHECK=true or REGISTRATION_ONLY=true):
- Need
requirements.mdordesign.md - If missing, return:
{"type":"needs_confirmation","reason":"minimal_docs","feature_id":"{FEATURE_ID}","message":"Feature has minimal documentation (no requirements.md or design.md)"} - Need
Unarchive
- SOURCE must exist -> else error + STOP w/ tip: "Run with no arguments to list archives"
- DEST must NOT exist (strip timestamp suffix to get base ID) -> else error + STOP
§4 Conflict Resolution (archive only)
If DEST exists and REGISTRATION_ONLY is not true: append _{TIMESTAMP} (format: %Y%m%d_%H%M%S)
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago First seen · 214 lines · 26 tokens per session scan A 6488ca4f0f77
feature-archiver is an agent published in the GitHub repository rp1-run/rp1 (38 stars, last pushed 4d ago), licensed Apache-2.0. It adds 26 tokens to every session and 1,844 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-07.
Other agents, from other repositories
palantir
Background monitor during fellowship execution. Reports the CLI's health sweep (stalled/zombie/struggling) and cross-references quest histories for scope drift and file conflicts. Spawned by Gandalf alongside quest teammates. Reports issues to the lead via SendMessage.
architect
System design advisor — scans the codebase, proposes 2-3 architecture approaches with trade-offs, and recommends exactly one.
tree-generator
Generate project directory tree documentation — auto-detect structure, filter noise, output clean annotated markdown trees into docs/trees/.
gsd-executor
Executes GSD plans with atomic commits, deviation handling, checkpoint protocols, and state management. Spawned by execute-phase orchestrator or execute-plan command.
product-owner
Senior Value Management Architect & Product Owner. Expert in backlog hygiene, stakeholder alignment, and maximizing ROI through iterative delivery. Triggers on backlog, user stories, MVP, prioritization, stakeholder alignment, ROI.
project-planner
Senior Technical Product Architect & Lead Planner. Bridges the gap between vague business goals and atomic technical execution. Expert in PRDs, milestone mapping, and agent orchestration.